Pulley-casing



W. F. KRUEGER.

. FULLEY CASING.

APPLICATION FILED NOV. 8. 1919.

1,398,783. Patented Nov. 29, 1921.

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Specification of Letters Patent. IPafi-gnted N6 7. 29, 1921 Application filed November 8, 1919. .senai'nb. 336,569;

To all whom it may concern Be it known that 1, WILLIAM F. KRUEGER,

a citizen of the United States, and a resi-z dent of Chicago, county of Cook, State of Illinois, have invented a new and useful Improvement in Pulley-Casings, of which the following is a full, clear, and exact deproduce the housing and attaching flange of the pulley from a single sheet of material, the parts being soarranged that they. may be stamped from the sheet in a single operation. 1

With these and further objects in view the invention will be better understood upon reference to the accompanying drawing in which,

Figure 1 is aside elevation of a pulley made up in accordance with the invention, and showing the housing and attaching. flange partly in section.

Fig. 2 is a front elevation.

Fig. 3 is a sectional view on the line 33 of Fig. 1. a

Fig. 4 is a plan view of the housing and attaching flange showing the relative position of the parts after stamping.

Fig. 5 is a modification showing the edge of the attaching flange as bent upon itself to provide an increased thickness of metal on the margin of the flange, and

Fig. 6 is a sectional view on the line 66 of Fig. 5.

Referring to the drawings in detail, as

, is customary with sash pulleys, the pulley 5 is mounted with freedom of rotation in a suitable housin which is supported on the sash by an attac ing flange. According to the present invention it is proposed to produce the housing and attaching flange by stamping the same in one operation, and from a single piece or sheet of material. According to the preferred construction, and referring particularly to Fig. 4, the attaching flange 6 represents a relatively elongated plate hating the screw openings 7 in its respective ends with an elongated opening 8 cut intermediate the screw openings. Produced on opposite sides of the flange 6 are the pieces 9 and 10 which go to make up the housing with openings 11 provided therein, in which the axle or spindle 13 of thepulley 1s ournaled. The two sides'9 and 10, of the housing form an integral part of the flange 6 Wlthtlle connecting webs 1 1. The metal around the openings 11 as well as that portionalong the part of the outer edge of the pieces 9 and 10 of the housing is countersunk as at 15wh1ch is customary in devices of this kind. The connectingwebs 14 terminate short of the top and bottom edges of the P180699 andlO, and the opposite corners of the, pieces are cut away as at 16 in semicircles. With the pieces 9 and 10 thus produced-they are adapted to be bent at a right angle to the flange 6 with their tops and bottoms rounded, with the confronting edges thereof joined together by means of the tongues 17 on the piece 9, received in the slots 18in the piece 9, the tongues being bent over to maintain a closed connection. Inasmuch as the thickness of the flange 6 is verymuch less than the of metal is made to overlie the space between the elongated opening 8 and the edge of the side of the flange, whereupon the housing produced by. the pieces 9 and 10 will practically surroundthe opening 9 with the webs 8 overlying the front of the flange between the edge of the opening and the edge of theside of theflange. (See for instance Fig. 2).

In the modification shown in Figs. 5 and 6 the flange is provided with an increased width of material thus offering a margin which may be bent upon itself a at 6', to provide an. increased thickness of metal around the edges of the flange which -will strengthen the same. In producing the opening 8, a raised flange is provided around the opening on the face of the flange which will offer a stabilizing means around which the housing is formed.

Having thus described my invention what I claim as new and desire" to secure by Letters- Patent is as follows A. sash pulley mounting formed from a single sheet of material and consisting of an attaching flange having screw openings at its ends and an elongated opening between the screw openings, said attaching flange having a flange extending around the elongated opcning and having its edges bent gin, and housing pieces joined to the opposite edges ofthe attaching flange by Webs, one housing piece having tongues projecting from its top and-bottom edges and the other housing piece having slots adjacent its top and bottom edges, the housing pieces being bent at right angles to the attaching flange with the webs overlying the same and their upper and lower edges in overlapping en- 10 gagement, and secured together by the tongues engaging the slots.

' WILLIAM FREDERICK KRUEGER. 

